Eriyar Yagi, azaman eriya ta al'ada, ana amfani da ita sosai a cikin makada HF, VHF da UHF.Yagi eriya ce ta ƙarewa wacce ta ƙunshi oscillator mai aiki (yawanci oscillator mai naɗewa), mai fa'ida mai wuce gona da iri da jagorori masu wucewa da aka tsara a layi daya.
Akwai abubuwa da yawa da suka shafi aikin eriyar Yagi, kuma daidaitawar eriyar Yagi ya fi sauran eriya rikitarwa.An daidaita sigogi guda biyu na eriya: mitar resonant da rabon igiyar igiyar ruwa.Wato, an daidaita mitar eriya a kusa da 435MHz, kuma adadin igiyar igiyar igiyar igiyar igiyar ruwa tana kusa da 1 gwargwadon yiwuwa.
Saita eriya kamar nisan 1.5m daga ƙasa, haɗa mitar igiyar igiyar ruwa a tsaye kuma fara aunawa.Domin rage kurakuran ma'auni, kebul ɗin da ke haɗa eriya zuwa mitar igiyar igiyar ruwa da rediyo zuwa mitar igiyar igiyar ruwa ya kamata ya zama gajere gwargwadon yiwuwa.Ana iya daidaita wurare uku: ƙarfin ƙarfin trimmer capacitor, matsayi na guntun kewayawa da tsawon oscillator mai aiki.Takamaiman matakan daidaitawa sune kamar haka:
(1) Gyara gajeriyar sandar kewayawa 5 ~ 6cm nesa da mashaya giciye;
(2) Ana daidaita mitar mai watsawa zuwa 435MHz, kuma ana daidaita capacitor na yumbu don rage girman igiyoyin eriya;
(3) Auna tsayawar igiyar eriya daga 430 ~ 440MHz, kowane 2MHz, kuma yi jadawali ko lissafin bayanan da aka auna.
(4) Duba ko mitar da ta yi daidai da mafi ƙarancin tsayayyen igiyar ruwa (mitar resonance eriya) tana kusa da 435MHz.Idan mitar ta yi girma ko ƙasa da ƙasa, za a iya sake auna igiyar igiyar tsaye ta maye gurbin oscillator mai aiki 'yan milimita kaɗan ko ya fi guntu;
(5) A ɗan canza matsayin sandar kewayawa kaɗan, kuma akai-akai da kyau-daidaita capacitor na guntu yumbu don sanya eriya ta tsaya ƙarami gwargwadon iko a kusa da 435MHz.
Lokacin da aka daidaita eriya, daidaita wuri ɗaya a lokaci guda, don samun sauƙin samun tsarin canji.Saboda yawan mitar aiki, girman daidaitawar bai yi girma ba.Misali, iyawar da aka daidaita na madaidaicin madaidaicin madaidaicin da aka haɗa a jeri akan mashaya γ kusan 3 ~ 4pF ne, kuma canjin kaɗan daga cikin goma na hanyar PI (pF) zai haifar da manyan canje-canje a igiyar ruwa.Bugu da ƙari, abubuwa da yawa kamar tsayin mashaya da matsayi na kebul kuma za su sami wani tasiri akan ma'auni na tsaye, wanda ya kamata a kula da shi a cikin tsarin daidaitawa.
Lokacin aikawa: Nuwamba-30-2022
